Controlling The Three Phase Motor By Using Three Single Phase Over Load Relays

Introduction

In this circuit you will be able to provide a protection to three phase motor by using a cheap and simple method.This method is very cheap and provides a useful protection.This is a simple method to control the three phase motor very simply.This circuit protects the motor very carefully and runs the motor safely.

Explanation

In this circuit three magnetic contactors are used which are parallel to each line of the three phase motor.These three contactors are also connected to three over load relays in series which provides a great protection to the three phase motor.There is no problem is created in this circuit and any abnormal condition is created the three relays sense the problem and disconnected the supply of the motor.And the motor will remain safe.

Circuit Diagram



Uses

This type of control is used in many kind of industries from lower to upper level.Because This method is cheap and very useful,So this method is used in all the industries related to this function.